Dating-stamp



F. M. SHAFER.

DATING STAMP.

APPLICATION r1 20 SEPT.27, 1919.

Patented May 11,1920.

awe/whom UNITED STATES PATENT oEEIoE.

FRANCIS MARION SHAFEB, OF MOA'B, UTAH.

DATING-STAMP.

Specification of Letters Patent.

Application filed September 27, 1919. Serial-N0. 326,745.

stamp in which are provided rubberbelts disposed upon rollers, andh'asfor its object the provision of a device which may be built into a stampof this character or formed "as an attachment-thereto and whereby therollers upon which the rubber belts are disposed may be urged into suchfrictional engagement with one another as to prevent any accidentalmovement of the rollers and consequently the rubber belts even thoughthe belts become loose from use.

An important object is the provision of a device of this character whichwill be extremely simple and inexpensive in manufacture, highlyefficient and positive in action, durable in service, and a distinctimprovement in the art.

With the above and other objects and advantages in view, the inventionconsists in the details of construction to be hereinafter more fullydescribed and claimed, and illustrated in the accompanying drawing inwhich Figure 1 is a front elevation of a dating stamp having my deviceapplied thereto or incorporated therein,

Fig. 2 is an end elevation of the device, the side plate of the framebeing removed, and

Fig. 3 is a perspective view of my attachment detached.

Referring more particularly to the drawings, the letter A designates anordinary dating stamp of the type which includes a frame B from whichextends a handle C and within which is journaled a plurality of rollersD about which are trained rubber belts E having dating indicia thereon.It is well known that in the useof a stamp of this character itfrequently occurs that the belts shift their positions and consequentlycause the printing of an erroneous date owing to the free revolubilityof the rollers upon their supporting shaft. It is with this objection inmind that the present invention has been designed.

In carrying out my invention I provide a member 10 formed from a singlepiece of spring sheet steel which is cut and bent to provide a handleportion 11, an offset body portion 12, and a flange 13 formed on "thebody portion at its edge opposite the handle portion. This flange istriangular in shape,

Patented May '11, '19520.

that is its free edge is inclined with respect to the flat surfaceof-the-body 12 so as to form in effect a wedge. The body portion 12 isprovided with a hole 1f for thepassage of the shaft F upon which therollers D are mounted, and is concaved, as shown.

Itis preferable that my device be installed upon the stamp during theassembly thereof in :its manufacture, and it will be .observed that mydevice is disposed at one side of the frame B with the shaft passingthrough the hole 14. This holds my device firmly in position so that itcannot be separated from the stamp. Under ordinary conditions, that iswhen it is desired to shiftthe rollers to change the date, my device ismoved by grasping the handle portion 11 and moving it so that the flange13 will be out of engagement with the frame. The rollers D may then bemoved freely upon the shaft F to change the date. After the date hasbeen set it is merely necessary that my device be swung into theposition clearly shown in Fig. 2, whereupon the inclined edge of theflange 13 will enga e against'the adjacent side of the frame which willcause the body portion 12 to engage the adjacent roller which willresult in forcing all of the rollers into close engagement with oneanother. The friction between the rollers will then prevent movementthereof so that any accidental change in the date will be, prevented.

From the foregoing description and a study of the drawings it will beapparent that I have thus provided a device which will be highlyefficient in use, which" is readily operable, which is not likely to getout of order and which may be manufactured and installed at very slightcost, upon any line dating stamp.

While I have shown and described the preferred embodiment of myinvention, it is of course'to be understood that I reserve the right tomake such changes in form, coneluding a frame, a shaft extending through7 said frame, a plurality of rollers independently movable upon saidshaft, and flexible belts trained about said rollers andv a portion ofsaid frame; a lock member disposed within said frame and pivoted uponsaid shaft, one end of said locking member being formed to projectbeyond one edge of the frame to serve as a handle, and the other endbeing formed as a wedge member engageable with the adjacent side of theframe whereby to force said member into firm engagement with theadjacent roller whereby to urge all of said rollers into frictionalengagement.

2. In a dating stamp including a frame, a shaft extending transverselytherethrough, a plurality of rollers revoluble upon said shaft, andflexible belts trained about said rollers; a lock device comprising amember formed from a single piece of resilient metal cut and bent toprovide a body portion, an offset handle portion at one end of said bodyportion, and a flange at the offset end of said body portion, the freeedge of said flange being inclined with respect to the fiat surface ofthe body portion whereby to conwhereby said body portion will engage theadjacent rollers and hold all of said rollers V firmly together.

3. In a dating stamp including a frame and a plurality of independentlyrevoluble rollers therein, an attachment connected with the frame andmovable whereby to force all of said rollers into frictional en-'gagement to prevent accidental rotation thereof. r v

In testimony whereof Iaffix m signature.

FRANCIS MARION S AFER.

